<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Display</title>
    <style>
        .bt {
            display: inline-block;
            padding: 12px;
            border: 1px solid #17a2b8;
            position: relative;
        }
        .image {
            position: absolute;
            left: 100px;
            display: none;
        }
        .bt:hover .image {
            display: block;
        }
    </style>
</head>
<body>
<div class="bt">
    扫描二维码
    <img  class="image" src="images/erweima.png"/>
</div>
</body>
</html>
